10.1594/PANGAEA.992684Santos, Felipe RodriguesFelipe RodriguesSantos0000-0001-8756-5036Lourenço, Rafael AndréRafael AndréLourençoTaniguchi, SatieSatieTaniguchiMartins, César de CastroCésar de CastroMartinsWainer, Ilana E K CIlana E K CWainer0000-0003-3784-623XMahiques, Michel MichaelovitchMichel MichaelovitchMahiques0000-0002-5249-5610Nagai, Renata HanaeRenata HanaeNagai0000-0002-1358-5074Figueira, Rubens César LopesRubens César LopesFigueira0000-0001-8945-4540Bouloubassi, Ioanna DIoanna DBouloubassiBicego, Marcia CMarcia CBicegoPANGAEA2026alkanesLa Plata Riversouthern Brazilian marginvegetation changesEvent labelLatitude of eventLongitude of eventDate/Time of eventElevation of eventAGESedimentation rate per yearSize fraction 0.063-0.002 mm, silt, mudCarbon, organic, totalδ13CMedian, grain sizeGravity corerAccelerator mass spectrometry (AMS)Laser diffraction particle size analyzer, Malvern Instruments, Mastersizer 2000Elemental analyzer, Costech Instruments, ECS 4010 coupled to IRMSIsotope Ratio Mass Spectrometer, Thermo Scientific, Delta V Advantage coupled to Costech ECS 40102019-06-02T12:20:00/2019-06-02T13:22:00Dataset1110 data pointstext/tab-separated-valuesCreative Commons Attribution 4.0 InternationalThis dataset contains grain-size distribution, total organic carbon (TOC), and bulk stable carbon isotope (δ¹³C-bulk) measurements from the Holocene marine sediment core MDBT 557 and MDBT 561, collected on the southern Brazilian continental shelf. Grain-size analyses were performed using laser diffraction after removal of carbonates and organic matter. TOC and δ¹³C-bulk were determined by elemental analysis–isotope ratio mass spectrometry (EA-IRMS) following acidification to remove inorganic carbon. The data provide information on sedimentological variability and bulk organic matter composition through the Holocene and are intended to support investigations of sediment dynamics, organic carbon burial, and paleoenvironmental changes on the southwestern Atlantic shelf.-52.21-51.3-33.79-33.27Brazilian southeastern continental shelfSão Paulo Research Foundationhttps://doi.org/10.13039/50110000180717/20344-7Mudbelts of Southern and Southeast Brazil: Implications on anthropogenic influences on the marine environment